Question

media geometrica a numerelor a=√7-2√3 si b=√7+2√6 este egala cu?

Answer 1

$Mg= \sqrt{ab}$$Mg= \sqrt{( \sqrt{7}-2 \sqrt{3}) ( \sqrt{7}+2 \sqrt{6} } = \sqrt{7+ \sqrt{42}-2 \sqrt{21}-4 \sqrt{18} }$= [tex] \sqrt{7+ \sqrt{42}-2 \sqrt{21} -4 \sqrt{9*2} } = \sqrt{7+ \sqrt{21}*( \sqrt{2} -2)-12 \sqrt{2} } [/tex]